DR. MACK-A-MATIX

prerecorded audio cassettes and audio discs, and educational computer software, all featuring instruction and/or tutoring in the fields of mathematics and science

jewelry

newsletters and educational books featuring mathematics and science instruction, calendars, non-electric erasers, paper placemats, posters, flash cards, and teaching materials in the form of games

video and computer game cartridges, dolls, and children's multiple activity toys for educational purposes

production for others of video tapes which provide incentives to children to demonstrate excellence in the fields of mathematics and science

design for others of CD-ROMs and computer software which provide incentives to children to demonstrate excellence in the fields of mathematics and science